The correct order of reactivity towards elect | vedclass

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Question

(A) Electrophilic substitution reaction rate depends on the electron density of the benzene ring. Groups that increase electron density (activating gr

Vedclass · Accepted Answer

Phenol $ > $ Benzene $ > $ Chlorobenzene $ > $ Benzoic acid

Vedclass · Answer

(A) Electrophilic substitution reaction rate depends on the electron density of the benzene ring. Groups that increase electron density (activating groups) increase reactivity,while groups that decrease electron density (deactivating groups) decrease reactivity. $1$. $-OH$ (Phenol) is a strong activating group due to its $+M$ effect,making it the most reactive. $2$. Benzene has no substituent,so it is less reactive than phenol but more reactive than deactivated rings. $3$. $-Cl$ (Chlorobenzene) is a deactivating group due to its $-I$ effect,though it is ortho/para directing. $4$. $-COOH$ (Benzoic acid) is a strongly deactivating group due to its $-M$ and $-I$ effects,making it the least reactive. Therefore,the correct order is: $	ext{Phenol} > 	ext{Benzene} > 	ext{Chlorobenzene} > 	ext{Benzoic acid}$.

The correct order of reactivity towards electrophilic substitution reaction is ........

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